Algebra 1

by
Hall, Prentice

Answer

$$y = \pm15$$

Work Step by Step

You add 225 to both sides. That gives you $$y^2 = 225$$ Then you square root both sides to get the final answer of $$y = \pm15$$ Remember the square root of any number above 0 always has two answers, hence the positive or minus sign ($\pm$)